CN115327676A

CN115327676A - Rainfall sensor rain sensing area measuring device and measuring method

Info

Publication number: CN115327676A
Application number: CN202211263761.7A
Authority: CN
Inventors: 张娜; 何方; 袁峰; 韩策; 张凯; 常伟; 徐海宁; 张军; 王松亭; 金东义; 汪忠伟
Original assignee: Shenyang Academy of Instrumentation Science Co Ltd; Sinomach Sensing Technology Co Ltd
Current assignee: Shenyang Academy of Instrumentation Science Co Ltd; Sinomach Sensing Technology Co Ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2022-11-11
Anticipated expiration: 2042-10-17
Also published as: CN115327676B

Abstract

The application discloses rainfall sensor feels rain area measuring device and measuring method, includes: the rain sensor to be detected is arranged on the bottom surface of the plane glass plate, an origin positioning component is arranged at a position, close to a corner, on the bottom surface of the plane glass plate, a water dropping component is arranged in an area above the plane glass plate and is driven by a moving mechanism with one end fixed on the support so as to change the position of the water dropping component in the area above the plane glass plate, an origin detector used for sensing the origin positioning component is arranged on the water dropping component, and a water wiping component in sliding connection with the plane glass plate is arranged on the upper surface of the plane glass plate; the device further comprises a controller electrically connected with the rainfall sensor to be measured, the moving mechanism, the origin detector, the water dripping component and the water wiping component respectively, wherein the controller is configured to: and determining a coordinate system and a coordinate origin for measuring the rain sensing area according to the first signal fed back by the origin detector.

Description

Rainfall sensor rain sensing area measuring device and measuring method

Technical Field

The embodiment of the application relates to the field of measuring devices, in particular to a rainfall sensor rain sensing area measuring device and a measuring method.

Background

The infrared light rainfall sensor is designed by adopting an infrared light total reflection principle and is used for judging whether rainfall occurs or not and measuring the rainfall. The sensor is arranged on the glass by a sticking method, infrared light emitted by a light emitting diode in the sensor reaches the glass through a lens by the design of a light path, and is reflected by the glass to irradiate the infrared light on a photosensitive diode in the sensor, when the sensor does not rain, the infrared light can be totally reflected on the glass by the design of the light path, the intensity of the light received by the photosensitive diode is maximum, and the output current is larger; when raining, the total reflection condition of infrared light on glass is destroyed due to the refraction effect of rainwater, only part of infrared light is reflected to the photosensitive diode, the intensity of the received light is greatly reduced, the output current is correspondingly reduced, the intensity of the light reflected to the photosensitive diode by the infrared light is further reduced along with the increase of rainfall, the output current is further reduced, and the principle that the sensor judges whether the glass is rained and measures the rainfall is adopted. The infrared light rainfall sensor is widely applied to a plurality of fields of traffic, agriculture, intelligent cities, building automation and the like.

Because the infrared light rainfall sensor adopts an optical principle, only if raindrops are in a fixed area of the sensor, the sensor can identify whether raining occurs or not and the size of the rainfall, and the raindrops falling to other places cannot be identified by the sensor. Therefore, the sensitivity and the detection precision of the sensor are directly influenced by the rain sensing area of the sensor, the sensor with the large rain sensing area can more easily identify whether the sensor is raining and the rainfall, namely the sensitivity of the sensor is correspondingly higher, otherwise, the sensitivity of the sensor is lower; therefore, the size of the rain sensing area of the sensor is an important index affecting the performance of the sensor.

At present, the infrared light rainfall sensor has fewer measuring devices for sensing the rain area, the measuring device with higher measuring precision is more lacking, most of the indexes of the effective rain area given by a sensor manufacturer are based on theoretical data calculated by an optical principle, and actual measuring means are lacking. Therefore, the design of the automatic rain sensing area measuring device of the rainfall sensor and the measuring method thereof have very important significance.

Disclosure of Invention

The application provides a rainfall sensor rain sensing area measuring device and a measuring method, and aims to solve the problems that in the prior art, the infrared light rainfall sensor rain sensing area measuring device is few, the measuring device with high measuring precision is more lack, most of indexes of effective rain sensing area given by a sensor manufacturer are based on theoretical data calculated by an optical principle, and actual measuring means are lack.

In a first aspect, the present application provides a rain sensor rain sensing area measuring device, comprising: a flat glass plate;

the plane glass plate is horizontally arranged, a support is arranged below the plane glass plate, a rainfall sensor to be measured is arranged on the bottom surface of the plane glass plate, an origin positioning component is arranged at a position, close to a corner, on the bottom surface of the plane glass plate, a water dropping component is arranged in an area above the plane glass plate, the water dropping component is driven by a moving mechanism with one end fixed on the support so as to change the position of the water dropping component in the area above the plane glass plate, an origin detector used for sensing the origin positioning component is arranged on the water dropping component, and a water wiping component in sliding connection with the plane glass plate is arranged on the upper surface of the plane glass plate;

the device further comprises a controller electrically connected with the rainfall sensor to be measured, the moving mechanism, the origin detector, the water dripping component and the water wiping component respectively, wherein the controller is configured to:

determining a coordinate system and a coordinate origin for measuring the rain sensing area according to the first signal fed back by the origin detector; the first signal is used for indicating that the distance between the origin detector and the origin positioning assembly is within a first preset value range;

and acquiring a rainfall signal sent by a rainfall sensor to be detected when the dripping component is at any position in the coordinate system, and acquiring the rain sensing area of the rainfall sensor to be detected according to the rainfall signal and the position signal sent by the moving mechanism.

Furthermore, the water dropping assembly is composed of a plurality of water dropping devices which are arranged in a matrix, the water dropping devices are provided with n rows along the x-axis direction of the coordinate system and m rows along the y-axis direction of the coordinate system, wherein n is greater than 1 and m is greater than 1.

Further, moving mechanism include one end with the support is fixed, the other end is to keeping away from the plane glass board to the moving mechanism support that extends to plane glass board upper surface direction is fixed in triaxial slip table module on the moving mechanism support, triaxial slip table module is including fixing Z axle slide rail on the moving mechanism support, be equipped with Z axle slider on the Z axle slide rail, be equipped with X axle slide rail on the Z axle slider, be equipped with X axle slider on the X axle slide rail, be equipped with Y axle slide rail on the X axle slider, be equipped with Y axle slider on the Y axle slide rail, just Y axle slider with drip subassembly fixed connection.

Furthermore, the wiper component is including fixing on the support with the same double track sharp slip table module of support side length, be equipped with the crossbeam on the double track sharp slip table module, the crossbeam with double track sharp slip table module sliding connection, be equipped with the wiper on the crossbeam, the top of wiper is equipped with the hair-dryer, just the air outlet orientation of hair-dryer the plane glass board.

Furthermore, the origin positioning component comprises a metal support which is located on the bottom surface of the plane glass plate and fixed on the support, and a metal column is arranged on the metal support.

In a second aspect, the present invention further provides a method for measuring a rain sensing area of a rain sensor, which is applied to the device for measuring a rain sensing area of a rain sensor in the first aspect, and the method includes:

acquiring a first signal fed back by an origin detector; the first signal is used for indicating that the distance between the origin detector and the origin positioning assembly is within a first preset value range;

determining a coordinate system and a coordinate origin for measuring the rain sensing area according to the first signal;

acquiring a rainfall signal sent by a rainfall sensor to be detected when the dripping assembly carries out dripping operation on different areas in the coordinate system, and acquiring a position signal in the coordinate system, corresponding to the rainfall signal, fed back by the moving mechanism;

carrying out rough measurement according to the rainfall signal and the position signal to generate a boundary position of a rain sensing area;

performing accurate measurement according to the boundary position of the rain sensing area to generate the area of a local rain sensing area;

and obtaining the rain sensing area of the rainfall sensor to be measured according to the area of the local rain sensing area.

Further, the step of determining a coordinate system and a coordinate origin for measuring the rain sensing area according to the first signal comprises:

acquiring position information corresponding to the first signal fed back by the moving mechanism;

and establishing a coordinate system according to the position information, wherein the origin of coordinates of the coordinate system is the orthographic projection position of the origin detector on the plane when the first signal is generated.

Further, the step of performing rough measurement according to the rainfall signal and the position signal to generate the boundary position of the rain sensing area further includes:

generating a first water spray signal; the first water spraying signal is used for indicating the water dropping assemblies to perform water dropping operation row by row along the positive direction of the x axis;

receiving a rainfall signal sent by the rainfall sensor to be detected; the rainfall signal is one of a signal of not raining and a signal of raining;

if the rainfall signals received in two adjacent times are converted from the signals without rainfall into rainfall signals, position signals corresponding to the signals without rainfall and fed back by the moving mechanism are obtained; generating a left boundary position according to the position signal, wherein the left boundary position is marked as N, the water dripping device is provided with N rows along the x-axis direction of the coordinate system, and N is more than or equal to 0 and is less than N;

if the rainfall signals received in two adjacent times are converted into signals not raining, position signals corresponding to the signals not raining, which are fed back by the moving mechanism, are obtained; generating a right boundary position according to the position signal, wherein the right boundary position is marked as M, and M is more than or equal to 0 and less than n;

generating a second water spray signal; the second water spraying signal is used for indicating the water dripping component to drip water line by line along the positive direction of the y axis;

receiving a rainfall signal sent by the rainfall sensor to be detected; the rainfall signal is one of a non-rainfall signal and a rainfall signal;

if the rainfall signal received in two adjacent times is converted from a signal which does not rainfall into a rainfall signal, acquiring a position signal which is fed back by the moving mechanism and corresponds to the signal which does not rainfall; generating a lower boundary position according to the position signal, wherein the lower boundary position is marked as P, the water dripping device is provided with m rows along the y-axis direction of the coordinate system, and P is more than or equal to 0 and less than m;

if the rainfall signals received in two adjacent times are converted from rainfall signals into non-rainfall signals, position signals corresponding to the non-rainfall signals fed back by the moving mechanism are obtained; generating an upper boundary position according to the position signal, wherein the upper boundary position is marked as Q, and Q is more than or equal to 0 and is less than m;

and generating the boundary position of the rain sensing area according to the left boundary position, the right boundary position, the upper boundary position and the lower boundary position.

Further, the step of performing accurate measurement according to the boundary position of the rain sensing area to generate the area of the local rain sensing area comprises:

generating a first control signal; the first control signal is used for indicating the moving mechanism to periodically move a preset distance along the positive direction of the x axis and indicating an Nth row of water dropping devices positioned at the left boundary position in the water dropping assembly to perform water dropping operation, and the water dropping devices are provided with N rows along the x axis direction of the coordinate system; n is more than or equal to 0 and less than N;

receiving a rainfall signal sent by the rainfall sensor to be detected in the periodic movement process of the moving mechanism along the positive direction of the x axis;

if the rainfall signal is displayed as a rainfall signal, generating a second control signal; the second control signal is used for indicating the moving mechanism to periodically move a preset distance along the positive direction of the y axis and indicating the water dripping devices in the water dripping assembly, which are positioned in the Nth row and the P-th row of the lower boundary position of the left boundary position at the same time, to drip water;

receiving a rainfall signal sent by the rainfall sensor to be measured in the process that the moving mechanism periodically moves along the positive direction of the y axis;

if the rainfall signal received in two adjacent times is converted from a signal which does not rainfall into a rainfall signal, acquiring a position signal which is fed back by the moving mechanism and corresponds to the rainfall signal; generating a lower boundary position from the position signal;

if the rainfall signals received in two adjacent times are converted from rainfall signals to non-rainfall signals, position signals corresponding to the rainfall signals fed back by the moving mechanism are obtained; generating an upper boundary position from the position signal;

generating a local rain sensing area corresponding to the preset distance range according to the lower boundary position and the upper boundary position;

and repeatedly executing the step of generating the first control signal until the dripping device moves to the right boundary position to obtain all the local rain sensing area areas in the whole x-axis direction.

Further, the step of performing the water dropping operation once includes:

controlling the water dripping component to drip water towards the plane glass plate;

and after receiving the rainfall signal sent by the rainfall sensor to be detected, generating a third control signal, wherein the third control signal is used for indicating the wiper component to clear the water on the surface of the plane glass plate.

According to the technical scheme, the beneficial effects of the application are as follows:

1) The outline of the rain sensing area of the rainfall sensor is found out by adopting a method of dripping water from the needle tube and judging an output signal of the rainfall sensor, and then the rain sensing area of the rainfall sensor is calculated by an accumulation method, so that an effective actual measurement means is provided for the rain sensing area of the rainfall sensor;

2) By adopting a measuring method combining rough measurement and precise measurement, the measuring precision is improved, and the measuring efficiency is ensured;

3) The rain sensing area of the sensor is tested by adopting a method of combining the simultaneous water dripping of the row needle tubes and the column needle tubes and the water dripping of the single needle tube, so that the area measurement efficiency can be greatly improved;

4) The three-axis sliding table module is adopted to accurately move in three directions of an X axis, a Y axis and a Z axis, so that the dripping assembly is driven to accurately move in the three directions, and the precision of area measurement and the flexibility of measurement can be greatly improved;

5) The wiper and the blower are adopted to remove water drops, so that the influence of the upper group of measurement on the lower group of measurement is avoided, and the area measurement precision can be greatly improved;

6) The position of the three-axis sliding table module is positioned by adopting the original point detector, so that the position of the water dropping component is positioned, and the water dropping component can be ensured to be positioned right above the rainfall sensor to be detected;

7) A needle tube with the diameter of 0.3mm is used as a water dripping device, the rain sensing area of the sensor is tested, and the accuracy of area measurement can be greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and those skilled in the art can obtain other drawings according to the provided descriptions without creative efforts.

Fig. 1 is a schematic structural diagram of a rain sensing area measuring device of a rainfall sensor according to the present application;

fig. 2 is a schematic connection diagram of components and a controller of a rain sensor rain sensing area measuring device according to the present application;

FIG. 3 is a schematic structural diagram of a drip assembly of a rain sensor area measurement device according to the present application;

fig. 4 is a schematic structural diagram of a rain sensing area measuring device of a rainfall sensor according to the present application;

FIG. 5 is a flow chart of a rain sensing area measurement method of the present application;

FIG. 6 is a schematic diagram of a rough measurement of a rain sensing area measurement method according to the present application;

fig. 7 is a schematic diagram of a precise measurement of the rain sensing area measurement method of the present application.

Reference numerals:

the device comprises a 1-plane glass plate, 11-a rainfall sensor to be detected, 12-an origin positioning component, 13-a metal column, 14-a water wiping component, 141-a double-track linear sliding table module, 142-a wiper, 143-a blower, 144-a cross beam, 15-a support, 17-a metal support, 2-a water dripping component, 21-a water dripping device, 22-an origin detector, 3-a moving mechanism, 31-a three-axis sliding table module, 32-a moving mechanism support, 311-Z axis sliding rails, 312-Z axis sliding blocks, 313-X axis sliding rails, 314-X axis sliding blocks, 315-Y axis sliding rails and 316-Y axis sliding blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the prior art, the measuring device for the rain sensing area of the infrared light rain sensor is few, the measuring device with high measuring precision is more lacking, most of indexes of the effective rain sensing area given by a sensor manufacturer are based on theoretical data calculated by an optical principle, actual measuring means are lacking, and in order to solve the technical problems, the measuring device and the measuring method for the rain sensing area of the infrared light rain sensor are provided.

In a first aspect, as shown in fig. 1, the present application provides a rain sensor rain sensing area measuring device, including: a flat glass plate 1; the plane glass plate 1 is horizontally arranged, a support 15 is arranged below the plane glass plate 1, the plane glass plate 1 is used for fixing a rainfall sensor 11 to be detected and needs to receive water drops dropped by a dropping component 2, the rainfall sensor 11 to be detected is arranged on the bottom surface of the plane glass plate 1, the sensor 11 to be detected is used for sensing whether the plane glass plate 1 has water drops or not, an origin positioning component 12 is arranged at a position, close to a corner, on the bottom surface of the plane glass plate 1, the origin positioning component 12 is used for being matched with an origin detector 22 to determine the zero position of the dropping component 2, the dropping component 2 is arranged in an upper area of the plane glass plate 1, the dropping component 2 is driven by a moving mechanism 3 with one end fixed on the support 15 so as to change the position of the dropping component 2 in the upper area of the plane glass plate 1, the origin detector 22 for sensing the origin positioning component 12 is arranged on the dropping component 2, a water drop component 14 in sliding connection with the plane glass plate 1 is arranged on the upper surface of the plane glass plate 1, and the dropping component 14 is used for scraping water drops dropped on the plane glass plate 1 during measurement;

as shown in fig. 2, the measuring apparatus further includes a controller electrically connected to the sensor 11, the moving mechanism 3, the origin detector 22, the drip assembly 2, and the wiper assembly 14, wherein the controller is connected to the moving mechanism 3 and the wiper assembly 14 through communication interfaces, and the controller is configured to:

determining a coordinate system and a coordinate origin for measuring the rain sensing area according to the first signal fed back by the origin detector 22; the first signal is used to indicate that the distance between the origin detector 22 and the origin positioning assembly 12 is within a first preset value range; and when the dripping component 2 is at any position in the coordinate system, acquiring a rainfall signal sent by the rainfall sensor 11 to be detected, and acquiring the rainfall sensing area of the rainfall sensor 11 to be detected according to the rainfall signal and the position signal sent by the moving mechanism 3.

In this embodiment, the controller controls the moving mechanism 3 to drive the dropping assembly 2, so that the dropping assembly 2 can move above the flat glass plate 1, if the origin detector 22 on the dropping assembly 2 is close to the origin positioning assembly 12 on the flat glass plate 1 and is smaller than a certain distance, the origin detector 22 outputs a closing signal to the controller, the controller records and stores the position of the moving mechanism 3 at this time, which is the zero position of the dropping assembly 2, when the controller controls the dropping assembly 2 to drop water, the sensor 11 to detect rainfall sends a rainfall signal to the controller, and the moving mechanism 3 sends a position signal corresponding to the rainfall signal to the controller, and the rainfall sensing area of the sensor to detect rainfall is calculated according to the rainfall signal and the position signal.

As shown in fig. 3, the drip assembly 2 is composed of a plurality of drip devices 21 arranged in a matrix, the drip devices 21 have n rows along the x-axis direction of the coordinate system, and m rows along the y-axis direction of the coordinate system, where n > 1 and m > 1. In the present embodiment, the dripping device 21 may be a needle tube or other structures capable of dripping water, and not limited herein, the dripping speed of the needle tube is relatively stable, and the aperture of the needle tube is 0.3mm, as described by taking n and m as 10 as an example, it can be seen that the needle tubes in the dripping assembly 2 are arranged in 10 rows and 10 columns, and the space between each needle tube is configured to be 3mm. The drip devices 21 are then arranged in 20 groups in a row and column representation, respectively, the groups being represented in coordinate form as:

h0, needle tube (0, 0), needle tube (1, 0), needle tube (2, 0), needle tube (3, 0), needle tube (4, 0), needle tube (5, 0), needle tube (6, 0), needle tube (7, 0), needle tube (8, 0), needle tube (9, 0);

h1, needle tube (0, 1), needle tube (1, 1), needle tube (2, 1), needle tube (3, 1), needle tube (4, 1), needle tube (5, 1), needle tube (6, 1), needle tube (7, 1), needle tube (8, 1) and needle tube (9, 1);

h2, needle tube (0, 2), needle tube (1, 2), needle tube (2, 2), needle tube (3, 2), needle tube (4, 2), needle tube (5, 2), needle tube (6, 2), needle tube (7, 2), needle tube (8, 2) and needle tube (9, 2);

h3, needle tube (0, 3), needle tube (1, 3), needle tube (2, 3), needle tube (3, 3), needle tube (4, 3), needle tube (5, 3), needle tube (6, 3), needle tube (7, 3), needle tube (8, 3) and needle tube (9, 3);

h4, needle tubes (0, 4), needle tubes (1, 4), needle tubes (2, 4), needle tubes (3, 4), needle tubes (4, 4), needle tubes (5, 4), needle tubes (6, 4), needle tubes (7, 4), needle tubes (8, 4) and needle tubes (9, 4);

h5, needle tube (0, 5), needle tube (1, 5), needle tube (2, 5), needle tube (3, 5), needle tube (4, 5), needle tube (5, 5), needle tube (6, 5), needle tube (7, 5), needle tube (8, 5) and needle tube (9, 5);

h6, needle tubes (0, 6), needle tubes (1, 6), needle tubes (2, 6), needle tubes (3, 6), needle tubes (4, 6), needle tubes (5, 6), needle tubes (6, 6), needle tubes (7, 6), needle tubes (8, 6) and needle tubes (9, 6);

h7, needle tube (0, 7), needle tube (1, 7), needle tube (2, 7), needle tube (3, 7), needle tube (4, 7), needle tube (5, 7), needle tube (6, 7), needle tube (7, 7), needle tube (8, 7) and needle tube (9, 7);

h8, needle tube (0, 8), needle tube (1, 8), needle tube (2, 8), needle tube (3, 8), needle tube (4, 8), needle tube (5, 8), needle tube (6, 8), needle tube (7, 8), needle tube (8, 8) and needle tube (9, 8);

h9, needle tubes (0, 9), needle tubes (1, 9), needle tubes (2, 9), needle tubes (3, 9), needle tubes (4, 9), needle tubes (5, 9), needle tubes (6, 9), needle tubes (7, 9), needle tubes (8, 9) and needle tubes (9, 9);

l0 is needle tube (0, 0), needle tube (0, 1), needle tube (0, 2), needle tube (0, 3), needle tube (0, 4), needle tube (0, 5), needle tube (0, 6), needle tube (0, 7), needle tube (0, 8) and needle tube (0, 9);

l1 is needle tube (1, 0), needle tube (1, 1), needle tube (1, 2), needle tube (1, 3), needle tube (1, 4), needle tube (1, 5), needle tube (1, 6), needle tube (1, 7), needle tube (1, 8) and needle tube (1, 9);

l2 is needle tube (2, 0), needle tube (2, 1), needle tube (2, 2), needle tube (2, 3), needle tube (2, 4), needle tube (2, 5), needle tube (2, 6), needle tube (2, 7), needle tube (2, 8) and needle tube (2, 9);

l3 is needle tube (3, 0), needle tube (3, 1), needle tube (3, 2), needle tube (3, 3), needle tube (3, 4), needle tube (3, 5), needle tube (3, 6), needle tube (3, 7), needle tube (3, 8) and needle tube (3, 9);

l4 is needle tube (4, 0), needle tube (4, 1), needle tube (4, 2), needle tube (4, 3), needle tube (4, 4), needle tube (4, 5), needle tube (4, 6), needle tube (4, 7), needle tube (4, 8) and needle tube (4, 9);

l5 is needle tube (5, 0), needle tube (5, 1), needle tube (5, 2), needle tube (5, 3), needle tube (5, 4), needle tube (5, 5), needle tube (5, 6), needle tube (5, 7), needle tube (5, 8) and needle tube (5, 9);

l6 is needle tube (6, 0), needle tube (6, 1), needle tube (6, 2), needle tube (6, 3), needle tube (6, 4), needle tube (6, 5), needle tube (6, 6), needle tube (6, 7), needle tube (6, 8) and needle tube (6, 9);

l7 is needle tube (7, 0), needle tube (7, 1), needle tube (7, 2), needle tube (7, 3), needle tube (7, 4), needle tube (7, 5), needle tube (7, 6), needle tube (7, 7), needle tube (7, 8) and needle tube (7, 9);

l8 is needle tube (8, 0), needle tube (8, 1), needle tube (8, 2), needle tube (8, 3), needle tube (8, 4), needle tube (8, 5), needle tube (8, 6), needle tube (8, 7), needle tube (8, 8), needle tube (8, 9);

l9 is needle tube (9, 0), needle tube (9, 1), needle tube (9, 2), needle tube (9, 3), needle tube (9, 4), needle tube (9, 5), needle tube (9, 6), needle tube (9, 7), needle tube (9, 8) and needle tube (9, 9).

As shown in fig. 4, in some embodiments, the moving mechanism 3 includes a moving mechanism support 32 having one end fixed to the support 15 and the other end fixed to the flat glass panel 1, and extending toward the upper surface of the flat glass panel 1, and a three-axis sliding table module 31 fixed to the moving mechanism support 32, wherein the three-axis sliding table module 31 includes a Z-axis sliding rail 311 fixed to the moving mechanism support 32, a Z-axis sliding block 312 is disposed on the Z-axis sliding rail 311, an X-axis sliding rail 313 is disposed on the Z-axis sliding block 312, an X-axis sliding block 314 is disposed on the X-axis sliding rail 313, a Y-axis sliding rail 315 is disposed on the X-axis sliding block 314, a Y-axis sliding block 316 is disposed on the Y-axis sliding rail 315, and the Y-axis sliding block 316 is fixedly connected to the dripping assembly 2. In this embodiment, triaxial slip table module 31 can drive the subassembly 2 that drips and freely remove along the three direction of X axle, Y axle, Z axle, and moving mechanism support 32 is used for three-axis slip table module 31 of fixed bearing, and the subassembly 2 that drips sets up towards plane glass board 1, is convenient for measure the rain sensing area of the rainfall sensor that awaits measuring through the subassembly 2 drips of dripping.

The wiper component 14 comprises a bracket 15, a double-track linear sliding table module 141 with the same length as one side of the bracket 15, a cross beam 144 is arranged on the double-track linear sliding table module 141, the cross beam 144 is in sliding connection with the double-track linear sliding table module 141, a wiper 142 is arranged on the cross beam 144, a blower 143 is arranged above the wiper 142, and an air outlet of the blower 143 faces the plane glass plate 1. In this embodiment, the wiper 142 is fixed on the cross beam 144, and can be driven by the double-rail linear sliding table module 141 to make a linear reciprocating motion, so as to wipe off water drops dropping on the plane glass plate 1 from the dripping component 2 during measurement, and the blower 143 arranged on the wiper 142 can blow dry water marks remaining after the wiper 142 wipes water.

The origin positioning component 12 comprises a metal bracket 17 which is positioned on the bottom surface of the plane glass plate 1 and fixed on the bracket 15, and a metal column 13 which is arranged on the metal bracket 17. In this embodiment, the metal bracket 17 is used to fix the metal pillar 13 on the bottom surface of the flat glass panel 1, and the metal pillar 13 is used in cooperation with the origin detector 22 to determine the zero point position of the drip assembly 2.

In a second aspect, as shown in fig. 5, the present invention further provides a rain sensor rain sensing area measuring method, which is applied to the rain sensor rain sensing area measuring device in the first aspect, and the method includes:

s100, acquiring a first signal fed back by an origin detector; the first signal is used for indicating that the distance between the origin detector and the origin positioning assembly is within a first preset value range;

in step S100, taking a rain sensor to be measured having only one circular rain sensing area and the rain sensing area within the coverage of the dripping assembly (i.e. 30mm × 30 mm) as an example, the method for measuring the rain sensing area of the rain sensor to be measured is further described, in this embodiment, each moving distance of the three-axis sliding table module is set to be 0.5mm. The controller controls the three-axis sliding table module to move along the Z axis, and when an original point detector is observed within 5mm from a plane glass plate, the three-axis sliding table module is controlled to move along the X axis and the Y axis.

S200, determining a coordinate system and a coordinate origin for measuring the rain sensing area according to the first signal;

the step of determining a coordinate system and a coordinate origin for measuring the rain sensing area from the first signal in step S200 includes:

acquiring position information corresponding to the first signal fed back by the moving mechanism; and establishing a coordinate system according to the position information, wherein the origin of coordinates of the coordinate system is the orthographic projection position of the origin detector on the plane when the first signal is generated. Wherein, the relative position of the dripping assembly in the coordinate system is recorded, and the relative coordinate system is established according to the position of the dripping assembly.

In the practical application scene, after receiving the first signal of initial point detector feedback, make triaxial slip table module stop to remove this moment, the controller record and the position of storing triaxial slip table module this moment to according to the initial zero position of this position determination drip subassembly.

S300, acquiring a rainfall signal sent by a rainfall sensor to be detected when the dripping assembly carries out dripping operation on different areas in the coordinate system, and meanwhile acquiring a position signal in the coordinate system, corresponding to the rainfall signal, fed back by the moving mechanism.

S400, performing rough measurement according to the rainfall signal and the position signal to generate a boundary position of a rain sensing area;

in step S400, as shown in fig. 6, the step of performing rough measurement according to the rainfall signal and the position signal to generate a boundary position of the rain sensing area further includes: generating a first water spray signal; the first water spraying signal is used for indicating the water dropping assemblies to perform water dropping operation row by row along the positive direction of the x axis; receiving a rainfall signal sent by the rainfall sensor to be detected; the rainfall signal is one of a non-rainfall signal and a rainfall signal; if the rainfall signals received in two adjacent times are converted from the signals without rainfall into rainfall signals, position signals corresponding to the signals without rainfall and fed back by the moving mechanism are obtained; generating a left boundary position according to the position signal, wherein the left boundary position is marked as N, the water dripping device is provided with N rows along the x-axis direction of the coordinate system, and N is more than or equal to 0 and less than N; if the rainfall signals received in two adjacent times are converted from rainfall signals into non-rainfall signals, position signals corresponding to the non-rainfall signals fed back by the moving mechanism are obtained; generating a right boundary position according to the position signal, wherein the right boundary position is marked as M, and M is more than or equal to 0 and is less than n; generating a second water spray signal; the second water spraying signal is used for indicating the water dripping component to drip water line by line along the positive direction of the y axis; receiving a rainfall signal sent by the rainfall sensor to be detected; the rainfall signal is one of a signal of not raining and a signal of raining; if the rainfall signal received in two adjacent times is converted from a signal which does not rainfall into a rainfall signal, acquiring a position signal which is fed back by the moving mechanism and corresponds to the signal which does not rainfall; generating a lower boundary position according to the position signal, wherein the lower boundary position is marked as P, the water dripping device is provided with m rows along the y-axis direction of the coordinate system, and P is more than or equal to 0 and is less than m; if the rainfall signals received in two adjacent times are converted from rainfall signals into non-rainfall signals, position signals corresponding to the non-rainfall signals fed back by the moving mechanism are obtained; generating an upper boundary position from the position signal, the upper boundary position being labeled Q, Q being greater than or equal to 0 and less than m; and generating the boundary position of the rain sensing area according to the left boundary position, the right boundary position, the upper boundary position and the lower boundary position. Wherein the step of performing the dripping operation once includes: controlling the water dripping component to drip water towards the plane glass plate; and after the controller receives the rainfall signal sent by the rainfall sensor to be detected, generating a third control signal, wherein the third control signal is used for indicating the wiper assembly to clear water on the surface of the plane glass plate.

In an actual application scene, the controller controls the needle tubes arranged in each row to drip water simultaneously from x =0 to x =9 along the positive direction of the x axis, and reads a rainfall signal of the rainfall sensor to be detected, if the rainfall signal is read for the first time, the controller indicates that 1 or more needle tubes in the row of needle tubes are positioned in a rainfall sensing area, but because the distance between every two needle tubes is 3mm, the uncertainty of the maximum distance (3 mm) of one needle tube exists between the position of the needle tube in the row and the left boundary position of the real rainfall sensing area of the rainfall sensor to be detected, and therefore, the position of the needle tube in the previous row is set as the left boundary position of the rainfall sensing area; if the rainfall signal is a signal of no rainfall, the controller controls the next row of needle tubes to drip water at the same time until the rainfall signal output by the rainfall sensor to be detected is a rainfall signal for the first time;

because the rainfall sensor to be measured is manufactured by adopting the light total reflection principle, the rain sensing area of the rainfall sensor to be measured is continuous, after 1 or more needle tubes in a certain row of needle tubes are judged to be in the rain sensing area, the time when the needle tubes leave the rain sensing area is judged, and then the middle area between the entering rain sensing area and the leaving rain sensing area, namely the rain sensing area of the sensor, is determined.

When the left boundary position is determined, the controller controls the next row of needle tubes to drip water simultaneously, reads the rainfall signal of the rainfall sensor to be detected, if the rainfall signal is a rainfall signal, the next row of needle tubes is still in the rainfall sensing area, the controller controls the next row of needle tubes to drip water simultaneously, and the operation is repeated until the rainfall signal output by the rainfall sensor to be detected is a non-rainfall signal, the next row of needle tubes is out of the rainfall sensing area, and therefore the position of the next row of needle tubes is set as the right boundary position of the rainfall sensing area.

After the left boundary position and the right boundary position are determined, the controller controls the needle tubes arranged in each row from y =0 to y =9 along the positive direction of the y axis to drip water simultaneously, reads the rainfall signal of the rainfall sensor to be measured, if the rainfall signal is read for the first time, the controller indicates that 1 or more needle tubes in the row of needle tubes are in the rainfall sensing area, but because the distance between every two needle tubes is 3mm, the position of the row of needle tubes and the lower boundary of the real rainfall sensing area of the rainfall sensor to be measured have the uncertainty of the maximum distance (3 mm) of one needle tube, and therefore, the position of the previous row of needle tubes is set as the lower boundary position of the rainfall sensing area; if the rainfall signal is a signal not raining, the controller controls the next row of needle tubes to drip water at the same time until the rainfall signal output by the rainfall sensor to be tested is a rainfall signal for the first time, and if the rainfall signal is a signal not raining, the controller indicates that no needle tube in the row of needle tubes is in the rain sensing area;

after the lower boundary position is determined, the controller controls the next row of needle tubes to drip water at the same time, reads the rainfall signal of the rainfall sensor to be detected, if the rainfall signal is a rainfall signal, the next row of needle tubes is still in the rainfall sensing area, the controller controls the next row of needle tubes to drip water at the same time, and the operation is repeated until the rainfall signal output by the rainfall sensor to be detected is a non-rainfall signal, the next row of needle tubes is out of the rainfall sensing area, and therefore the positions of the next row of needle tubes are set as the upper boundary position of the rainfall sensing area.

In this embodiment, when x =4, that is, after the needle tube in the 4 th row drips, the sensor to be measured sends a non-rainfall signal, and when x =5, that is, after the needle tube in the 5 th row drips, the sensor to be measured sends a rainfall signal, and a position signal corresponding to the non-rainfall signal fed back by the moving mechanism, that is, a position signal corresponding to the needle tube in the x =4 th row, that is, the needle tube in the 4 th row is obtained; generating a left boundary position according to the position signal, wherein the left boundary position is N =4; when x =7, namely after the needle tube in the 7 th column drips, the sensor to be measured sends a rainfall signal, and when x =8, namely after the needle tube in the 8 th column drips, the sensor to be measured sends a non-rainfall signal, and a position signal corresponding to the non-rainfall signal fed back by the moving mechanism, namely a position signal corresponding to the needle tube in the x =8 th column, namely the needle tube in the 8 th column, is obtained; generating a right boundary position according to the position signal, wherein the right boundary position is M =8; when y =3, namely after the needle tube in the 3 rd row drips, the rainfall sensor to be tested sends a signal of not raining, and when y =4, namely after the needle tube in the 4 th row drips, the rainfall sensor to be tested sends a signal of raining, and a position signal corresponding to the signal of not raining, which is fed back by the moving mechanism, is obtained, namely a position signal corresponding to the needle tube in the y =3 rd row, namely the needle tube in the 3 rd row; generating a lower boundary position from the position signal, the lower boundary position being P =3; when y =6, namely after the needle tube in the 6 th row drips, the rainfall sensor to be measured sends a rainfall signal, when y =7, namely after the needle tube in the 7 th row drips, the rainfall sensor to be measured sends a non-rainfall signal, and a position signal corresponding to the non-rainfall signal fed back by the moving mechanism, namely a position signal corresponding to the needle tube in the y =7 th row, namely the needle tube in the 7 th row, is obtained; an upper boundary position is generated from the position signal, where the upper boundary position is Q =7.

S500, performing accurate measurement according to the boundary position of the rain sensing area to generate the area of the local rain sensing area;

in step S500, as shown in fig. 7, the step of performing a precise measurement according to the boundary position of the rain sensing area to generate a local rain sensing area includes: generating a first control signal; the first control signal is used for indicating the moving mechanism to periodically move a preset distance along the positive direction of the x axis and indicating an Nth row of water dropping devices positioned at the left boundary position in the water dropping assembly to perform water dropping operation, and the water dropping devices are provided with N rows along the x axis direction of the coordinate system; n is more than or equal to 0 and less than N; receiving a rainfall signal sent by the rainfall sensor to be measured in the process that the moving mechanism periodically moves along the positive direction of the x axis; if the rainfall signal shows that the rainfall signal does not fall, the Nth row of the dripping devices are not in the rain sensing area, the step of generating the first control signal is repeatedly executed, and if the rainfall signal shows that the Nth row of the dripping devices enter the rain sensing area, the second control signal is generated; the second control signal is used for indicating the moving mechanism to periodically move a preset distance along the positive direction of the y axis and indicating the water dripping devices in the water dripping assembly, which are positioned in the Nth row and the P-th row of the lower boundary position of the left boundary position at the same time, to drip water; receiving a rainfall signal sent by the rainfall sensor to be measured in the process that the moving mechanism moves periodically along the y-axis direction; if the rainfall signal received in two adjacent times is converted from a signal which does not rainfall into a rainfall signal, acquiring a position signal which is fed back by the moving mechanism and corresponds to the rainfall signal; generating a lower boundary position from the position signal; if the rainfall signals received in two adjacent times are converted from rainfall signals into non-rainfall signals, position signals corresponding to the rainfall signals and fed back by the moving mechanism are obtained; generating an upper boundary position from the position signal; generating a local rain sensing area corresponding to the preset distance range according to the lower boundary position and the upper boundary position; and repeatedly executing the step of generating the first control signal until the dripping device moves to the right boundary position to obtain all the areas of the local rain sensing areas in the whole x-axis direction.

In the practical application scene, the left boundary position that rain sensor that awaits measuring obtained from the process of thick survey felt rain region begins, the right boundary position that rain sensor felt rain region that awaits measuring ends until, meticulous control triaxial slip table module moves towards x axle positive direction with every tiny position of step, and then drive the subassembly that drips and move towards x axle positive direction with every tiny position of step, adopt the mode that row's needle tubing drips simultaneously and the single needle tubing drips alone and combines together, it carries out accurate measurement to rain sensor area that awaits measuring. For convenience of explanation, the needle tube in the left boundary position column of the rain sensing area (i.e., the nth column of needle tube) obtained through rough measurement is referred to as a measurement column of needle tube, and the needle tube in the left boundary position column of the rain sensing area (i.e., the nth column of needle tube) and the needle tube in the lower boundary row of needle tube in the rain sensing area (i.e., the pth row of needle tube) are referred to as a measurement needle tube (i.e., the needle tube (N, P)).

The method comprises the steps that firstly, a controller controls a measuring array needle tube to drip water at the same time, namely, an Nth array needle tube drips water at the same time, a rainfall signal of a rainfall sensor to be measured is read, if the rainfall signal is a signal that the rainfall does not fall, the measuring array needle tube is not in a rainfall sensing area, the controller controls a dripping assembly to move one step in the positive direction of an x axis, the measuring array needle tube is controlled repeatedly to drip water at the same time, the rainfall signal of the rainfall sensor to be measured is continuously read, if the rainfall signal is a signal that the rainfall does not fall, the measuring array needle tube is still not in the rainfall sensing area, the controller continuously controls the dripping assembly to move one step in the positive direction of the x axis, the measuring array needle tube is controlled repeatedly to drip water at the same time until the rainfall signal of the rainfall sensor to be measured is a rainfall signal, and the measuring array needle tube really enters the rainfall sensing area of the rainfall sensor to be measured at the moment.

And secondly, controlling the measuring needle tube (namely the needle tube (N, P)) to independently drip water by the controller, reading a rainfall signal of the rainfall sensor to be measured, if the rainfall signal is a signal that the measuring needle tube is not in the rainfall sensing area, controlling the dripping assembly to move one step in the positive direction of the y axis by the controller, repeatedly controlling the measuring needle tube to independently drip water, continuously reading the rainfall signal of the rainfall sensor to be measured, if the rainfall signal is a signal that the measuring needle tube is not in the rainfall sensing area, indicating that the measuring needle tube is still not in the rainfall sensing area, continuously controlling the dripping assembly to move one step in the positive direction of the y axis by the controller, repeatedly controlling the measuring needle tube to independently drip water until the rainfall signal of the rainfall sensor to be measured is a rainfall signal, indicating that the measuring needle tube really enters the rainfall sensing area of the rainfall sensor to be measured at the moment, namely the lower boundary position measured in the step is obtained, and recording and storing the lower boundary position in the step by the controller.

And thirdly, the controller controls the water dropping component to move one step towards the positive direction of the y axis, the measuring needle tube is controlled to drop water independently, the rainfall signal of the rainfall sensor to be measured is read, if the rainfall signal is a rainfall signal, the measuring needle tube is still in the rainfall sensing area, the controller continuously controls the water dropping component to move one step towards the positive direction of the y axis, the measuring needle tube is controlled to drop water independently, the rainfall signal of the rainfall sensor to be measured is continuously read, if the rainfall signal is a rainfall signal, the measuring needle tube is still in the rainfall sensing area, the controller continuously controls the water dropping component to move one step towards the positive direction of the y axis, the measuring needle tube is controlled to drop water independently repeatedly until the rainfall signal of the rainfall sensor to be measured is an unwrinkled signal, the measuring needle tube is really moved out of the rainfall sensing area of the rainfall sensor to be measured at the moment, the position of the previous step of the measuring needle tube is the upper boundary position measured in the step, and the controller records and stores the upper boundary position in the step.

And fourthly, the controller controls the water dropping component to move one step towards the positive direction of the x axis, whether the water dropping component reaches the right boundary position of the rain sensing area of the rainfall sensor to be measured through rough measurement is judged, if yes, the area precise measurement process is stopped, and otherwise, the second step and the third step are repeatedly executed. The area is a local rain sensing area in the whole rain sensor rain sensing area to be measured, the area can be approximately seen to be formed by 1 rectangular area and 2 triangular areas, and the areas of the three areas are summed up to obtain the area of the local rain sensing area in the step.

And S600, obtaining the rain sensing area of the rainfall sensor to be measured according to the area of the local rain sensing area.

In step S600, the areas of all the local rain sensing areas obtained through calculation in step S500 are summed, that is, the areas of the local rain sensing areas obtained in all the steps are accumulated, so that the rain sensing area of the whole rainfall sensor to be measured can be calculated.

Because the manufacturers of the rainfall sensors are different, the external dimensions of the sensors are different and may exceed the measurement range of the dripping component 2, and the measurement of the rain sensing area of the large-area rainfall sensor can be realized by moving the position of the dripping component 2 for many times according to the measurement method; similarly, for more than one sensor to be measured in the rain sensing area, the position of the dripping component 2 can be moved for many times, and the measurement of the rain sensing area of more than one sensor to be measured in the rain sensing area can be realized according to the measurement method.

Setting N as the left boundary position of the rain sensing area, setting M as the right boundary position of the rain sensing area, setting P as the lower boundary position of the rain sensing area, and setting Q as the upper boundary position of the rain sensing area;

according to the measuring method, the specific process of roughly measuring the rain sensing area of the rainfall sensor comprises the following steps:

the first step is as follows: setting a cycle number control variable i to be 1, namely i =1;

the second step is that: the controller controls the needle tubes of the H [ i ] group to drip water simultaneously, reads a rainfall signal of a rainfall sensor to be detected, judges whether the rainfall signal is a rainfall signal, if so, the controller indicates that 1 or more needle tubes in the needle tubes of the H [ i ] group are positioned in a rainfall sensing area, the position of H [ i-1] is the left boundary position of the rainfall sensing area, namely N = i-1, stores the value of i-1, and executes the third step; if no rainfall signal is output, indicating that no needle tube in the H [ i ] group of needle tubes is in the rain sensing area, and executing the sixth step;

thirdly, adding 1 to the value of the cyclic variable i, namely i = i +1;

fourthly, judging whether the value of i is less than 10, if so, executing the fifth step; if not less than 10, executing the eighth step;

the fifth step: the controller controls the needle tubes of the H [ i ] group to drip water at the same time, reads the rainfall signal of the rainfall sensor to be detected, judges whether the rainfall signal is a rainfall signal or not, and executes a third step if the rainfall signal is the rainfall signal; if no rainfall signal is output, the position of H [ i ] is the right boundary position of the rain sensing area, namely M = i, the controller stores the value of i and executes the eighth step;

the sixth step, adding 1 to the value of the loop variable i, namely i = i +1;

step seven, judging whether the value of i is less than 10, if so, executing the step two; if not less than 10, executing the eighth step;

setting a cycle number control variable i to be 1, namely i =1;

the ninth step, the controller controls the L [ i ] group of needle tubes to drip water simultaneously, reads an output signal of a sensor for rainfall to be detected, judges whether a rainfall signal is output or not, if the rainfall signal is output, the controller indicates that 1 or more needle tubes in the L [ i ] group of needle tubes are positioned in a rain sensing area, the position of L [ i-1] is the lower boundary position of the rain sensing area, namely P = i-1, the controller stores the value of i-1, and the tenth step is executed; if no rainfall signal is output, it indicates that no needle tube in the L [ i ] group of needle tubes is in the rain sensing area, and the thirteenth step is executed;

step ten, adding 1 to the value of the loop variable i, namely i = i +1;

eleventh, judging whether the value of i is less than 10, if so, executing the twelfth step; if not less than 10, ending the rough measurement process;

the twelfth step: the controller controls the needle tubes of the L [ i ] group to drip water at the same time, reads the output signal of the rainfall sensor to be detected, judges whether a rainfall signal is output or not, and executes the tenth step if the rainfall signal is output; if no rainfall signal is output, the position of L [ i ] is the upper boundary position of the rain sensing area, namely Q = i, the controller stores the value of i, and the rough measurement process is ended;

a thirteenth step of adding 1 to the value of the loop variable i, namely i = i +1;

fourteenth, judging whether the value of i is less than 10, if so, executing the ninth step; if not less than 10, ending the rough measurement process;

through the rough measurement of the process, the boundary position coordinates of the rain sensing area are determined, namely: left boundary position: n, right boundary position: m, lower boundary position: p, upper boundary position: and Q.

It should be noted that, according to the rough measurement method of the rainfall sensor to be measured, when the H [ i ] group of needle tubes drip simultaneously, and the rainfall signal of the rainfall sensor to be measured is read as a rainfall signal, it indicates that 1 or more needle tubes in the H [ i ] group of needle tubes are located in the rainfall sensing area, but since the distance between each needle tube and the lower boundary position of the rainfall sensor to be measured is 3mm, the maximum needle tube distance, i.e. uncertainty of 3mm, exists between the position of the H [ i ] group of needle tubes and the lower boundary position of the real rainfall sensing area of the rainfall sensor to be measured, when the lower boundary position P is determined, the position of the H [ i ] group of needle tubes needs to be extended downward by one needle tube (i.e. 3 mm) distance, i.e. P = i-1; similarly, when determining the left boundary position N, the L [ i ] group of needle positions are extended to the left by a distance of one needle (i.e. 3 mm), i.e. N = i-1.

Because the rain sensing area of the rainfall sensor to be measured is continuous, the method for roughly measuring the boundary position on the rain sensing area of the rainfall sensor to be measured is as follows: after determining the lower boundary position of a rain sensing area of a rain sensor to be detected, dripping water simultaneously through H [ i ] group needle tubes, reading a rain signal of the rain sensor to be detected, when the rain signal is a rainfall signal, indicating that the H [ i ] group needle tubes are positioned in the rain sensing area, continuing to control the next group of needle tubes to drip water simultaneously, when the rain signal of the rain sensor to be detected is a non-rainfall signal, indicating that the H [ i ] group needle tubes are not positioned in the rain sensing area of the rain sensor to be detected, so that the position of the H [ i ] group needle tubes is the upper boundary position of the rain sensing area of the rain sensor to be detected, namely Q = i; similarly, the rainfall sensor to be measured senses the right boundary position of the rain sensing area, namely, M = i.

The interval of each step of accurate measurement of the rainfall sensor to be measured is set to be 0.5mm, taking the left boundary position N, the right boundary position M, the lower boundary position P and the upper boundary position Q of the rainfall sensor to be measured after rough measurement as an example, the measurement process is described as follows:

according to the left boundary position N, the right boundary position M, the lower boundary position P and the upper boundary position Q of the rainfall sensor to be measured after rough measurement, calculating the cycle number NUM _ X in the X-axis direction of the precise measurement of the rain sensing area of the rainfall sensor to be measured, namely: NUM _ X = (M-N) × 6; the number of Y-axis direction cycles NUM _ Y is: NUM _ Y = (Q-P) × 6;

secondly, enabling a cycle time control variable i = Nx 6 in the X-axis direction; let the Y-axis direction cycle number control variable j = P × 6;

thirdly, clearing a lower boundary position array LOW [ i ], namely: LOW [ i ] =0, upper boundary position number group HIGH [ i ] is cleared, i.e.: HIGH [ i ] =0, i ranges from 0 to NUM _ X-1;

fourthly, the controller controls the L [ N ] groups of needle tubes to drip water simultaneously, reads the rainfall signal of the rainfall sensor to be measured, if the rainfall signal is a rainfall signal, the controller indicates that 1 or more needle tubes in the L [ N ] groups of needle tubes are positioned in a rain sensing area, and then the fifth step is executed; if no rainfall signal is output, it indicates that no needle tube in the L [ N ] group of needle tubes is in the rain sensing area, then the twelfth step is executed;

the fifth step: the controller controls the needle tubes [ N and P ] to independently drip water, reads an output signal of a rainfall sensor to be detected, judges whether the rainfall signal is a rainfall signal, if the rainfall signal is the rainfall signal, the needle tubes [ N and P ] are in a rainfall sensing area, stores a numerical value of LOW [ i ], namely LOW [ i ] = j × 0.5, executes the sixth step, and if the rainfall signal is a non-rainfall signal, executes the ninth step;

and a sixth step: the value of the loop variable j is increased by 1, i.e. j = j +1;

the seventh step, judging whether the value of j is less than NUM _ Y, if so, executing the eighth step; if not less than NUM _ Y then execute the twelfth step;

eighthly, the controller controls the three-axis sliding table module to horizontally move 0.5mm in the positive direction of the Y axis, the controller controls the needle tubes [ N and P ] to drip water, a rainfall signal of the rainfall sensor to be detected is read, if the rainfall signal is a rainfall signal, the needle tubes [ N and P ] are in a rainfall sensing area, and the sixth step is executed; if the rainfall signal is a signal of no rainfall, the needle tube [ N, P ] is not in the rain sensing area, the controller stores a HIGH [ i ] value, namely, HIGH [ i ] = (j-1). Times.0.5, and the twelfth step is executed;

step nine, adding 1 to the value of a cyclic variable j, namely j = j +1;

the tenth step is that whether the value of j is smaller than NUM _ Y is judged, if so, the eleventh step is executed; if not less than NUM _ Y then execute the twelfth step;

a tenth step, the controller controls the three-axis sliding table module to horizontally move 0.5mm in the positive direction of the Y axis, and the fifth step is executed;

a twelfth step of adding 1 to the value of the loop variable i, namely i = i +1; a cycle number control variable j = P × 6 in the Y axis direction;

thirteenth step, judging whether the value of i is less than NUM _ X, if so, executing the fourteenth step, and if not, ending the fine testing process;

a fourteenth step, controlling the three-axis sliding table module to move 0.5mm towards the positive direction of the x axis by the controller, and executing the fourth step;

the calculation process of the rain sensing area of the rainfall sensor to be measured is as follows:

the method comprises the following steps that a rain sensing area S is summed to calculate a cycle number control variable i to be set to zero, namely i = N multiplied by 6, and the area S is set to zero, namely S =0;

second, judging whether the result of (HIGH [ i +1] -LOW [ i +1 ]) - (HIGH [ i ] -LOW [ i ]) is positive, if so, executing the third step, otherwise, executing the fourth step;

a third step of S = S + (HIGH [ i ] -LOW [ i ]). Times.0.5 + [ (HIGH [ i +1] -LOW [ i +1 ]) - (HIGH [ i ] -LOW [ i ]) ] times.0.5X 0.5, and the fifth step is performed;

a fourth step of S = S + (HIGH [ i +1] -LOW [ i +1 ]). Times.0.5 + [ (HIGH [ i ] -LOW [ i ]) - (HIGH [ i +1] -LOW [ i +1 ]) ] times.0.5X 0.5, and the fifth step is performed;

step five, adding 1 to the value of the loop variable i, namely i = i +1, and executing the step six;

judging whether the value of i is smaller than NUM _ X, and if so, executing the second step; if not less than NUM _ X, the area calculation flow ends.

In the application, the left boundary position and the right boundary position are measured first, and then the lower boundary position and the upper boundary position are measured, so that the order of measurement is not limited.

Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the specific embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the following claims.

Claims

1. A rainfall area measuring device is felt to rainfall sensor which characterized in that includes: a flat glass plate (1);

the plane glass plate (1) is horizontally arranged, a support (15) is arranged below the plane glass plate (1), a rainfall sensor (11) to be detected is arranged on the bottom surface of the plane glass plate (1), an origin positioning component (12) is arranged at a position, close to a corner, on the bottom surface of the plane glass plate (1), a water dropping component (2) is arranged in a region above the plane glass plate (1), the water dropping component (2) is driven by a moving mechanism (3) with one end fixed on the support (15) to change the position of the water dropping component (2) in the region above the plane glass plate (1), an origin detector (22) used for sensing the origin positioning component (12) is arranged on the water dropping component (2), and a water wiping component (14) in sliding connection with the plane glass plate (1) is arranged on the upper surface of the plane glass plate (1);

the device further comprises a controller electrically connected with the rainfall sensor to be measured (11), the moving mechanism (3), the origin detector (22), the dripping assembly (2), the wiping assembly (14), respectively, the controller being configured to:

determining a coordinate system and a coordinate origin for measuring the rain sensing area according to the first signal fed back by the origin detector (22); the first signal is for indicating that a distance between the origin detector (22) and the origin positioning assembly (12) is within a first preset value range;

when the dripping assembly (2) is located at any position in the coordinate system, the rainfall signal sent by the rainfall sensor (11) to be detected is obtained, and the rainfall sensing area of the rainfall sensor (11) to be detected is obtained according to the rainfall signal and the position signal sent by the moving mechanism (3).

2. A rain sensor rain sensing area measuring device according to claim 1, characterized in that said dripping assembly (2) is composed of a plurality of dripping units (21) arranged in a matrix, said dripping units (21) having n rows along the x-axis direction of said coordinate system and m rows along the y-axis direction of said coordinate system, wherein n > 1 and m > 1.

3. The rainfall sensor rain sensing area measuring device according to claim 1, wherein the moving mechanism (3) comprises a moving mechanism bracket (32) having one end fixed to the bracket (15) and the other end extending away from the plane glass plate (1) and toward the upper surface of the plane glass plate (1), and a three-axis sliding table module (31) fixed to the moving mechanism bracket (32);

triaxial slip table module (31) is including fixing Z axle slide rail (311) on moving mechanism support (32), be equipped with Z axle slider (312) on Z axle slide rail (311), be equipped with X axle slide rail (313) on Z axle slider (312), be equipped with X axle slider (314) on X axle slide rail (313), be equipped with Y axle slide rail (315) on X axle slider (314), be equipped with Y axle slider (316) on Y axle slide rail (315), just Y axle slider (316) with drip subassembly (2) fixed connection.

4. The rainfall area measuring device of claim 1, wherein the wiper assembly (14) comprises a double-rail linear sliding table module (141) which is fixed to the support (15) and has the same length as one side of the support (15), a cross beam (144) is arranged on the double-rail linear sliding table module (141), the cross beam (144) is slidably connected with the double-rail linear sliding table module (141), a wiper (142) is arranged on the cross beam (144), a blower (143) is arranged above the wiper (142), and an air outlet of the blower (143) faces the plane glass plate (1).

5. A rain sensor rain sensing area measuring device as claimed in claim 1, wherein the origin positioning unit (12) comprises a metal bracket (17) fixed on the bracket (15) and located on the bottom surface of the plane glass plate (1), and the metal bracket (17) is provided with a metal post (13).

6. A rain sensor rain sensing area measuring method applied to the rain sensor rain sensing area measuring apparatus according to any one of claims 1 to 5, comprising the steps of:

acquiring a rainfall signal sent by a rainfall sensor to be detected when the dripping assembly performs dripping operation on different areas in the coordinate system, and acquiring a position signal in the coordinate system, corresponding to the rainfall signal, fed back by a moving mechanism;

roughly measuring according to the rainfall signal and the position signal to generate a boundary position of a rain sensing area;

and obtaining the rain sensing area of the rainfall sensor to be measured according to the local rain sensing area.

7. The method of claim 6, wherein the step of determining a coordinate system and origin of coordinates for measuring the rain sensing area from the first signal comprises:

8. The method of claim 7, wherein the step of generating the boundary position of the rain sensing area by performing the rough measurement according to the rainfall signal and the position signal further comprises:

if the rainfall signals received in two adjacent times are converted from the signals without rainfall into rainfall signals, position signals corresponding to the signals without rainfall and fed back by the moving mechanism are obtained; generating a left boundary position according to the position signal, wherein the left boundary position is marked as N, the water dripping device is provided with N rows along the x-axis direction of the coordinate system, and N is more than or equal to 0 and less than N;

if the rainfall signals received in two adjacent times are converted from rainfall signals into non-rainfall signals, position signals corresponding to the non-rainfall signals fed back by the moving mechanism are obtained; generating a right boundary position according to the position signal, wherein the right boundary position is marked as M, and M is more than or equal to 0 and less than n;

generating a second water spray signal; the second water spraying signal is used for indicating the water dripping assembly to drip water line by line along the positive direction of the y axis;

if the rainfall signal received in two adjacent times is converted from a signal which does not rainfall into a rainfall signal, acquiring a position signal which is fed back by the moving mechanism and corresponds to the signal which does not rainfall; generating a lower boundary position according to the position signal, wherein the lower boundary position is marked as P, the water dripping device is provided with m rows along the y-axis direction of the coordinate system, and P is more than or equal to 0 and is less than m;

if the rainfall signals received in two adjacent times are converted into signals not raining, position signals corresponding to the signals not raining, which are fed back by the moving mechanism, are obtained; generating an upper boundary position from the position signal, the upper boundary position being labeled Q, Q being greater than or equal to 0 and less than m;

9. The method according to claim 7, wherein the step of performing the accurate measurement based on the boundary position of the rain sensing area to generate the local rain sensing area comprises:

and repeatedly executing the step of generating the first control signal until the dripping device moves to the right boundary position to obtain all the areas of the local rain sensing areas in the whole x-axis direction.

10. A method for measuring a rain sensing area by a rain sensor according to claim 8 or 9, wherein the step of performing the one drip operation comprises: